Source google image: http://2.bp.blogspot.com/-eSqiZr2xV-8/UjbzqVwA8mI/AAAAAAAALz0/Q87KUN-z5XQ/s1600/Sch%C3%A9ma+de+branchement+en+image++une+horloge..gif
Schema horloge electrique legrand
Source google image: http://2.bp.blogspot.com/-eSqiZr2xV-8/UjbzqVwA8mI/AAAAAAAALz0/Q87KUN-z5XQ/s1600/Sch%C3%A9ma+de+branchement+en+image++une+horloge..gif